Add --keep-files-open-threshold (fixes #288)

3 files changed, 24 insertions, 323 deletions

diff --git a/qpdf/qtest/qpdf.test b/qpdf/qtest/qpdf.test
index 4dd0909f..d01ac3af 100644
--- a/qpdf/qtest/qpdf.test
+++ b/qpdf/qtest/qpdf.test
@@ -1685,7 +1685,7 @@ $n_tests += 4;
     binmode F;
     my $content = <F>;
     close(F);
-    for (my $i = 1; $i <= 201; ++$i)
+    for (my $i = 1; $i <= 51; ++$i)
     {
         open(F, sprintf(">%03d-kfo.pdf", $i)) or die;
         binmode F;
@@ -1693,16 +1693,17 @@ $n_tests += 4;
         close(F);
     }
 }
-$td->runtest("disable keep files open",
+$td->runtest("automatic disable keep files open",
              {$td->COMMAND =>
                   "qpdf --verbose --static-id --empty" .
+                  " --keep-files-open-threshold=50" .
                   " --pages *kfo.pdf -- a.pdf"},
              {$td->FILE => "disable-kfo.out", $td->EXIT_STATUS => 0},
              $td->NORMALIZE_NEWLINES);
 $td->runtest("don't disable keep files open",
              {$td->COMMAND =>
                   "qpdf --verbose --static-id --empty" .
-                  " --pages 11*kfo.pdf -- a.pdf"},
+                  " --pages 01*kfo.pdf -- a.pdf"},
              {$td->FILE => "enable-kfo.out", $td->EXIT_STATUS => 0},
              $td->NORMALIZE_NEWLINES);
 $td->runtest("explict keep files open",
diff --git a/qpdf/qtest/qpdf/disable-kfo.out b/qpdf/qtest/qpdf/disable-kfo.out
index 4aec24b6..a33044e0 100644
--- a/qpdf/qtest/qpdf/disable-kfo.out
+++ b/qpdf/qtest/qpdf/disable-kfo.out
@@ -50,156 +50,6 @@ qpdf: processing 048-kfo.pdf
 qpdf: processing 049-kfo.pdf
 qpdf: processing 050-kfo.pdf
 qpdf: processing 051-kfo.pdf
-qpdf: processing 052-kfo.pdf
-qpdf: processing 053-kfo.pdf
-qpdf: processing 054-kfo.pdf
-qpdf: processing 055-kfo.pdf
-qpdf: processing 056-kfo.pdf
-qpdf: processing 057-kfo.pdf
-qpdf: processing 058-kfo.pdf
-qpdf: processing 059-kfo.pdf
-qpdf: processing 060-kfo.pdf
-qpdf: processing 061-kfo.pdf
-qpdf: processing 062-kfo.pdf
-qpdf: processing 063-kfo.pdf
-qpdf: processing 064-kfo.pdf
-qpdf: processing 065-kfo.pdf
-qpdf: processing 066-kfo.pdf
-qpdf: processing 067-kfo.pdf
-qpdf: processing 068-kfo.pdf
-qpdf: processing 069-kfo.pdf
-qpdf: processing 070-kfo.pdf
-qpdf: processing 071-kfo.pdf
-qpdf: processing 072-kfo.pdf
-qpdf: processing 073-kfo.pdf
-qpdf: processing 074-kfo.pdf
-qpdf: processing 075-kfo.pdf
-qpdf: processing 076-kfo.pdf
-qpdf: processing 077-kfo.pdf
-qpdf: processing 078-kfo.pdf
-qpdf: processing 079-kfo.pdf
-qpdf: processing 080-kfo.pdf
-qpdf: processing 081-kfo.pdf
-qpdf: processing 082-kfo.pdf
-qpdf: processing 083-kfo.pdf
-qpdf: processing 084-kfo.pdf
-qpdf: processing 085-kfo.pdf
-qpdf: processing 086-kfo.pdf
-qpdf: processing 087-kfo.pdf
-qpdf: processing 088-kfo.pdf
-qpdf: processing 089-kfo.pdf
-qpdf: processing 090-kfo.pdf
-qpdf: processing 091-kfo.pdf
-qpdf: processing 092-kfo.pdf
-qpdf: processing 093-kfo.pdf
-qpdf: processing 094-kfo.pdf
-qpdf: processing 095-kfo.pdf
-qpdf: processing 096-kfo.pdf
-qpdf: processing 097-kfo.pdf
-qpdf: processing 098-kfo.pdf
-qpdf: processing 099-kfo.pdf
-qpdf: processing 100-kfo.pdf
-qpdf: processing 101-kfo.pdf
-qpdf: processing 102-kfo.pdf
-qpdf: processing 103-kfo.pdf
-qpdf: processing 104-kfo.pdf
-qpdf: processing 105-kfo.pdf
-qpdf: processing 106-kfo.pdf
-qpdf: processing 107-kfo.pdf
-qpdf: processing 108-kfo.pdf
-qpdf: processing 109-kfo.pdf
-qpdf: processing 110-kfo.pdf
-qpdf: processing 111-kfo.pdf
-qpdf: processing 112-kfo.pdf
-qpdf: processing 113-kfo.pdf
-qpdf: processing 114-kfo.pdf
-qpdf: processing 115-kfo.pdf
-qpdf: processing 116-kfo.pdf
-qpdf: processing 117-kfo.pdf
-qpdf: processing 118-kfo.pdf
-qpdf: processing 119-kfo.pdf
-qpdf: processing 120-kfo.pdf
-qpdf: processing 121-kfo.pdf
-qpdf: processing 122-kfo.pdf
-qpdf: processing 123-kfo.pdf
-qpdf: processing 124-kfo.pdf
-qpdf: processing 125-kfo.pdf
-qpdf: processing 126-kfo.pdf
-qpdf: processing 127-kfo.pdf
-qpdf: processing 128-kfo.pdf
-qpdf: processing 129-kfo.pdf
-qpdf: processing 130-kfo.pdf
-qpdf: processing 131-kfo.pdf
-qpdf: processing 132-kfo.pdf
-qpdf: processing 133-kfo.pdf
-qpdf: processing 134-kfo.pdf
-qpdf: processing 135-kfo.pdf
-qpdf: processing 136-kfo.pdf
-qpdf: processing 137-kfo.pdf
-qpdf: processing 138-kfo.pdf
-qpdf: processing 139-kfo.pdf
-qpdf: processing 140-kfo.pdf
-qpdf: processing 141-kfo.pdf
-qpdf: processing 142-kfo.pdf
-qpdf: processing 143-kfo.pdf
-qpdf: processing 144-kfo.pdf
-qpdf: processing 145-kfo.pdf
-qpdf: processing 146-kfo.pdf
-qpdf: processing 147-kfo.pdf
-qpdf: processing 148-kfo.pdf
-qpdf: processing 149-kfo.pdf
-qpdf: processing 150-kfo.pdf
-qpdf: processing 151-kfo.pdf
-qpdf: processing 152-kfo.pdf
-qpdf: processing 153-kfo.pdf
-qpdf: processing 154-kfo.pdf
-qpdf: processing 155-kfo.pdf
-qpdf: processing 156-kfo.pdf
-qpdf: processing 157-kfo.pdf
-qpdf: processing 158-kfo.pdf
-qpdf: processing 159-kfo.pdf
-qpdf: processing 160-kfo.pdf
-qpdf: processing 161-kfo.pdf
-qpdf: processing 162-kfo.pdf
-qpdf: processing 163-kfo.pdf
-qpdf: processing 164-kfo.pdf
-qpdf: processing 165-kfo.pdf
-qpdf: processing 166-kfo.pdf
-qpdf: processing 167-kfo.pdf
-qpdf: processing 168-kfo.pdf
-qpdf: processing 169-kfo.pdf
-qpdf: processing 170-kfo.pdf
-qpdf: processing 171-kfo.pdf
-qpdf: processing 172-kfo.pdf
-qpdf: processing 173-kfo.pdf
-qpdf: processing 174-kfo.pdf
-qpdf: processing 175-kfo.pdf
-qpdf: processing 176-kfo.pdf
-qpdf: processing 177-kfo.pdf
-qpdf: processing 178-kfo.pdf
-qpdf: processing 179-kfo.pdf
-qpdf: processing 180-kfo.pdf
-qpdf: processing 181-kfo.pdf
-qpdf: processing 182-kfo.pdf
-qpdf: processing 183-kfo.pdf
-qpdf: processing 184-kfo.pdf
-qpdf: processing 185-kfo.pdf
-qpdf: processing 186-kfo.pdf
-qpdf: processing 187-kfo.pdf
-qpdf: processing 188-kfo.pdf
-qpdf: processing 189-kfo.pdf
-qpdf: processing 190-kfo.pdf
-qpdf: processing 191-kfo.pdf
-qpdf: processing 192-kfo.pdf
-qpdf: processing 193-kfo.pdf
-qpdf: processing 194-kfo.pdf
-qpdf: processing 195-kfo.pdf
-qpdf: processing 196-kfo.pdf
-qpdf: processing 197-kfo.pdf
-qpdf: processing 198-kfo.pdf
-qpdf: processing 199-kfo.pdf
-qpdf: processing 200-kfo.pdf
-qpdf: processing 201-kfo.pdf
 qpdf: removing unreferenced pages from primary input
 qpdf: adding pages from 001-kfo.pdf
 qpdf: adding pages from 002-kfo.pdf
@@ -252,154 +102,4 @@ qpdf: adding pages from 048-kfo.pdf
 qpdf: adding pages from 049-kfo.pdf
 qpdf: adding pages from 050-kfo.pdf
 qpdf: adding pages from 051-kfo.pdf
-qpdf: adding pages from 052-kfo.pdf
-qpdf: adding pages from 053-kfo.pdf
-qpdf: adding pages from 054-kfo.pdf
-qpdf: adding pages from 055-kfo.pdf
-qpdf: adding pages from 056-kfo.pdf
-qpdf: adding pages from 057-kfo.pdf
-qpdf: adding pages from 058-kfo.pdf
-qpdf: adding pages from 059-kfo.pdf
-qpdf: adding pages from 060-kfo.pdf
-qpdf: adding pages from 061-kfo.pdf
-qpdf: adding pages from 062-kfo.pdf
-qpdf: adding pages from 063-kfo.pdf
-qpdf: adding pages from 064-kfo.pdf
-qpdf: adding pages from 065-kfo.pdf
-qpdf: adding pages from 066-kfo.pdf
-qpdf: adding pages from 067-kfo.pdf
-qpdf: adding pages from 068-kfo.pdf
-qpdf: adding pages from 069-kfo.pdf
-qpdf: adding pages from 070-kfo.pdf
-qpdf: adding pages from 071-kfo.pdf
-qpdf: adding pages from 072-kfo.pdf
-qpdf: adding pages from 073-kfo.pdf
-qpdf: adding pages from 074-kfo.pdf
-qpdf: adding pages from 075-kfo.pdf
-qpdf: adding pages from 076-kfo.pdf
-qpdf: adding pages from 077-kfo.pdf
-qpdf: adding pages from 078-kfo.pdf
-qpdf: adding pages from 079-kfo.pdf
-qpdf: adding pages from 080-kfo.pdf
-qpdf: adding pages from 081-kfo.pdf
-qpdf: adding pages from 082-kfo.pdf
-qpdf: adding pages from 083-kfo.pdf
-qpdf: adding pages from 084-kfo.pdf
-qpdf: adding pages from 085-kfo.pdf
-qpdf: adding pages from 086-kfo.pdf
-qpdf: adding pages from 087-kfo.pdf
-qpdf: adding pages from 088-kfo.pdf
-qpdf: adding pages from 089-kfo.pdf
-qpdf: adding pages from 090-kfo.pdf
-qpdf: adding pages from 091-kfo.pdf
-qpdf: adding pages from 092-kfo.pdf
-qpdf: adding pages from 093-kfo.pdf
-qpdf: adding pages from 094-kfo.pdf
-qpdf: adding pages from 095-kfo.pdf
-qpdf: adding pages from 096-kfo.pdf
-qpdf: adding pages from 097-kfo.pdf
-qpdf: adding pages from 098-kfo.pdf
-qpdf: adding pages from 099-kfo.pdf
-qpdf: adding pages from 100-kfo.pdf
-qpdf: adding pages from 101-kfo.pdf
-qpdf: adding pages from 102-kfo.pdf
-qpdf: adding pages from 103-kfo.pdf
-qpdf: adding pages from 104-kfo.pdf
-qpdf: adding pages from 105-kfo.pdf
-qpdf: adding pages from 106-kfo.pdf
-qpdf: adding pages from 107-kfo.pdf
-qpdf: adding pages from 108-kfo.pdf
-qpdf: adding pages from 109-kfo.pdf
-qpdf: adding pages from 110-kfo.pdf
-qpdf: adding pages from 111-kfo.pdf
-qpdf: adding pages from 112-kfo.pdf
-qpdf: adding pages from 113-kfo.pdf
-qpdf: adding pages from 114-kfo.pdf
-qpdf: adding pages from 115-kfo.pdf
-qpdf: adding pages from 116-kfo.pdf
-qpdf: adding pages from 117-kfo.pdf
-qpdf: adding pages from 118-kfo.pdf
-qpdf: adding pages from 119-kfo.pdf
-qpdf: adding pages from 120-kfo.pdf
-qpdf: adding pages from 121-kfo.pdf
-qpdf: adding pages from 122-kfo.pdf
-qpdf: adding pages from 123-kfo.pdf
-qpdf: adding pages from 124-kfo.pdf
-qpdf: adding pages from 125-kfo.pdf
-qpdf: adding pages from 126-kfo.pdf
-qpdf: adding pages from 127-kfo.pdf
-qpdf: adding pages from 128-kfo.pdf
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-qpdf: adding pages from 130-kfo.pdf
-qpdf: adding pages from 131-kfo.pdf
-qpdf: adding pages from 132-kfo.pdf
-qpdf: adding pages from 133-kfo.pdf
-qpdf: adding pages from 134-kfo.pdf
-qpdf: adding pages from 135-kfo.pdf
-qpdf: adding pages from 136-kfo.pdf
-qpdf: adding pages from 137-kfo.pdf
-qpdf: adding pages from 138-kfo.pdf
-qpdf: adding pages from 139-kfo.pdf
-qpdf: adding pages from 140-kfo.pdf
-qpdf: adding pages from 141-kfo.pdf
-qpdf: adding pages from 142-kfo.pdf
-qpdf: adding pages from 143-kfo.pdf
-qpdf: adding pages from 144-kfo.pdf
-qpdf: adding pages from 145-kfo.pdf
-qpdf: adding pages from 146-kfo.pdf
-qpdf: adding pages from 147-kfo.pdf
-qpdf: adding pages from 148-kfo.pdf
-qpdf: adding pages from 149-kfo.pdf
-qpdf: adding pages from 150-kfo.pdf
-qpdf: adding pages from 151-kfo.pdf
-qpdf: adding pages from 152-kfo.pdf
-qpdf: adding pages from 153-kfo.pdf
-qpdf: adding pages from 154-kfo.pdf
-qpdf: adding pages from 155-kfo.pdf
-qpdf: adding pages from 156-kfo.pdf
-qpdf: adding pages from 157-kfo.pdf
-qpdf: adding pages from 158-kfo.pdf
-qpdf: adding pages from 159-kfo.pdf
-qpdf: adding pages from 160-kfo.pdf
-qpdf: adding pages from 161-kfo.pdf
-qpdf: adding pages from 162-kfo.pdf
-qpdf: adding pages from 163-kfo.pdf
-qpdf: adding pages from 164-kfo.pdf
-qpdf: adding pages from 165-kfo.pdf
-qpdf: adding pages from 166-kfo.pdf
-qpdf: adding pages from 167-kfo.pdf
-qpdf: adding pages from 168-kfo.pdf
-qpdf: adding pages from 169-kfo.pdf
-qpdf: adding pages from 170-kfo.pdf
-qpdf: adding pages from 171-kfo.pdf
-qpdf: adding pages from 172-kfo.pdf
-qpdf: adding pages from 173-kfo.pdf
-qpdf: adding pages from 174-kfo.pdf
-qpdf: adding pages from 175-kfo.pdf
-qpdf: adding pages from 176-kfo.pdf
-qpdf: adding pages from 177-kfo.pdf
-qpdf: adding pages from 178-kfo.pdf
-qpdf: adding pages from 179-kfo.pdf
-qpdf: adding pages from 180-kfo.pdf
-qpdf: adding pages from 181-kfo.pdf
-qpdf: adding pages from 182-kfo.pdf
-qpdf: adding pages from 183-kfo.pdf
-qpdf: adding pages from 184-kfo.pdf
-qpdf: adding pages from 185-kfo.pdf
-qpdf: adding pages from 186-kfo.pdf
-qpdf: adding pages from 187-kfo.pdf
-qpdf: adding pages from 188-kfo.pdf
-qpdf: adding pages from 189-kfo.pdf
-qpdf: adding pages from 190-kfo.pdf
-qpdf: adding pages from 191-kfo.pdf
-qpdf: adding pages from 192-kfo.pdf
-qpdf: adding pages from 193-kfo.pdf
-qpdf: adding pages from 194-kfo.pdf
-qpdf: adding pages from 195-kfo.pdf
-qpdf: adding pages from 196-kfo.pdf
-qpdf: adding pages from 197-kfo.pdf
-qpdf: adding pages from 198-kfo.pdf
-qpdf: adding pages from 199-kfo.pdf
-qpdf: adding pages from 200-kfo.pdf
-qpdf: adding pages from 201-kfo.pdf
 qpdf: wrote file a.pdf
diff --git a/qpdf/qtest/qpdf/enable-kfo.out b/qpdf/qtest/qpdf/enable-kfo.out
index 82e1b7c4..0c011518 100644
--- a/qpdf/qtest/qpdf/enable-kfo.out
+++ b/qpdf/qtest/qpdf/enable-kfo.out
@@ -1,23 +1,23 @@
 qpdf: selecting --keep-open-files=y
-qpdf: processing 110-kfo.pdf
-qpdf: processing 111-kfo.pdf
-qpdf: processing 112-kfo.pdf
-qpdf: processing 113-kfo.pdf
-qpdf: processing 114-kfo.pdf
-qpdf: processing 115-kfo.pdf
-qpdf: processing 116-kfo.pdf
-qpdf: processing 117-kfo.pdf
-qpdf: processing 118-kfo.pdf
-qpdf: processing 119-kfo.pdf
+qpdf: processing 010-kfo.pdf
+qpdf: processing 011-kfo.pdf
+qpdf: processing 012-kfo.pdf
+qpdf: processing 013-kfo.pdf
+qpdf: processing 014-kfo.pdf
+qpdf: processing 015-kfo.pdf
+qpdf: processing 016-kfo.pdf
+qpdf: processing 017-kfo.pdf
+qpdf: processing 018-kfo.pdf
+qpdf: processing 019-kfo.pdf
 qpdf: removing unreferenced pages from primary input
-qpdf: adding pages from 110-kfo.pdf
-qpdf: adding pages from 111-kfo.pdf
-qpdf: adding pages from 112-kfo.pdf
-qpdf: adding pages from 113-kfo.pdf
-qpdf: adding pages from 114-kfo.pdf
-qpdf: adding pages from 115-kfo.pdf
-qpdf: adding pages from 116-kfo.pdf
-qpdf: adding pages from 117-kfo.pdf
-qpdf: adding pages from 118-kfo.pdf
-qpdf: adding pages from 119-kfo.pdf
+qpdf: adding pages from 010-kfo.pdf
+qpdf: adding pages from 011-kfo.pdf
+qpdf: adding pages from 012-kfo.pdf
+qpdf: adding pages from 013-kfo.pdf
+qpdf: adding pages from 014-kfo.pdf
+qpdf: adding pages from 015-kfo.pdf
+qpdf: adding pages from 016-kfo.pdf
+qpdf: adding pages from 017-kfo.pdf
+qpdf: adding pages from 018-kfo.pdf
+qpdf: adding pages from 019-kfo.pdf
 qpdf: wrote file a.pdf